Hi,

Looking at https://review.opendev.org/#/c/750224/, we've got a change that switches haproxy from looking at tcp socket connection, to http.  I'd like to update that change to enable the same for when apache is providing https, and use the /healthcheck endpoint.

See https://github.com/juju/charm-helpers/pull/521 for a change to the haproxy template to enable this, and I'd submit a fresh patchset for the change but can't right now with opendev in maintenance.

I'm wondering re zaza tests for this, should I be adding bundles that have 3 units of Glance (to prove HA) and likely Vault so that we can check https?  That would increase the bundle size a chunk, but I think it would improve the overall testing of the charm.

Thoughts?